CN110513956B - Refrigerator and control method thereof - Google Patents

Refrigerator and control method thereof Download PDF

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Publication number
CN110513956B
CN110513956B CN201810495789.0A CN201810495789A CN110513956B CN 110513956 B CN110513956 B CN 110513956B CN 201810495789 A CN201810495789 A CN 201810495789A CN 110513956 B CN110513956 B CN 110513956B
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Prior art keywords
air
humidity
moisture permeable
value
storage box
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CN110513956A (en
Inventor
刘浩泉
辛若武
王磊
王丽燕
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Haier Smart Home Co Ltd
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Haier Smart Home Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/005—Charging, supporting, and discharging the articles to be cooled using containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention provides a refrigerator and a control method thereof, wherein the method comprises the following steps: detecting a first humidity value of a moisture permeable space in the storage box and/or a second humidity value of a space above the storage box; and controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value. The moisture permeable space of the refrigerator continuously leaks the water vapor from the moisture permeable component, so the humidity of the space above the moisture permeable component is higher. When the humidity of the space above the moisture permeable assembly is too high, the difference between the humidity inside and outside the moisture permeable space is reduced, so that the moisture permeable effect of the moisture permeable assembly is reduced. The fan and the air door can be controllably opened and closed according to the humidity values of the moisture permeable space and the space above the moisture permeable component, air supply is started when the humidity of the moisture permeable space or the space above the moisture permeable component is higher or the humidity difference value of the two sides of the moisture permeable component is smaller, and the humidity difference of the two sides of the moisture permeable component is improved so as to improve the moisture permeable effect of the moisture permeable component.

Description

Refrigerator and control method thereof
Technical Field
The invention relates to the field of refrigeration and freezing, in particular to a refrigerator and a control method thereof.
Background
The air-cooled refrigerator is a refrigerator which utilizes cold air flow circulation to refrigerate a refrigerator chamber. In a common air-cooled refrigerator, the moisture of food can be taken away by cold air circulation, so that the food in a refrigerating chamber is easily dried in the air, and the fresh-keeping effect of the food is influenced.
In order to solve the above problems, the bottom of the refrigerating chamber of the conventional air-cooled refrigerator is provided with a storage drawer specially used for storing fruits and vegetables, and an approximately closed space is formed inside the storage drawer to keep the moisture of the fruits and vegetables. However, the moisture of fruits and vegetables is high, which tends to make the air inside the storage drawer humid. If the inside unnecessary moisture of storing drawer can't in time discharge, cause the inside vapor of drawer to pile up and form the condensation easily, still can produce when serious and drip, influence user's use and experience.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a refrigerator and a control method thereof that overcome or at least partially solve the above problems.
One purpose of the invention is to prevent the moisture in the moisture permeable space from forming condensation.
Another object of the present invention is to improve the moisture permeation effect of the moisture permeable component.
The invention provides a control method of a refrigerator, the refrigerator comprises a refrigerator body, a storage box and a moisture permeable assembly, wherein a storage compartment and an air supply duct positioned at the rear part of the storage compartment are formed in the refrigerator body, and the rear wall of the storage compartment is provided with at least one openable air inlet communicated with the air supply duct; the storage box is arranged at the bottom of the storage compartment, a moisture permeable space is formed in the storage box, the moisture permeable assembly is formed on the upper surface of the storage box and is configured to allow water vapor in the moisture permeable space to permeate outside the moisture permeable space in a one-way mode, the air inlet is arranged above the height of the upper surface of the storage box, and the vertical distance between the air inlet and the upper surface of the storage box is smaller than the preset distance; the control method comprises the following steps: detecting a first humidity value of the moisture permeable space and/or a second humidity value of the space above the storage box; and controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value.
Optionally, the step of controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value includes: judging whether the first humidity value is larger than a first preset value or not; if yes, opening the air door, and allowing the airflow in the air supply duct to enter the storage chamber; judging whether the first humidity value is smaller than a second preset value or not; if so, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage chamber.
Optionally, the step of controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value comprises; judging whether the second humidity value is larger than a third preset value or not; if yes, opening the air door, and allowing the airflow in the air supply duct to enter the storage chamber; judging whether the second humidity value is smaller than a fourth preset value or not; if so, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage chamber.
Optionally, the step of controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value includes: calculating a difference between the first humidity value and the second humidity value; judging whether the difference value is smaller than a fifth preset value or not; if yes, opening the air door, and allowing the airflow in the air supply duct to enter the storage chamber; judging whether the difference value is larger than a sixth preset numerical value or not; if so, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage chamber.
Optionally, the step of controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value includes: judging whether the first humidity value is larger than a first preset value or not; if yes, opening the air door, and allowing the airflow in the air supply duct to enter the storage chamber; after waiting for the preset time, the air door is closed to prevent the air flow in the air supply duct from entering the storage chamber.
In another aspect, the present invention also provides a refrigerator, including: the air supply device comprises a box body, a storage chamber and an air supply duct positioned at the rear part of the storage chamber are formed in the box body, and at least one air inlet communicated with the air supply duct is formed in the rear wall of the storage chamber; the storage box is arranged at the bottom of the storage chamber, a moisture permeable space is limited in the storage box, and an opening is formed in the upper surface of the storage box; the moisture permeable component is formed at the opening of the storage box and is configured to allow water vapor inside the moisture permeable space to permeate outside the moisture permeable space in a single direction; the air inlet is arranged above the height of the upper surface of the storage box, and the vertical distance between the air inlet and the upper surface of the storage box is smaller than a preset distance; each air door is arranged at the corresponding air inlet and used for opening and closing the air inlet; at least one humidity detection device arranged in the moisture permeable space and/or the storage room; and the main control device is electrically connected with the at least one air door and the at least one humidity detection device and is configured to control the opening and closing state of the air inlet according to the humidity value detected by the at least one humidity detection device.
Optionally, the at least one humidity detection device comprises: the first humidity sensor is arranged in the storage box and used for detecting a first humidity value of the moisture permeable space; the main control device is also configured to open the air door when the first humidity value is larger than a first preset value; when the first humidity value is detected to be smaller than a second preset value, closing the air door; the first predetermined value is greater than the second predetermined value.
Optionally, the at least one humidity detection device comprises: the second humidity sensor is arranged in the storage chamber, is positioned above the storage box and is used for detecting a second humidity value of the space above the storage box; the main control device is also configured to open the air door when the second humidity value is detected to be larger than a third preset value; when the second humidity value is detected to be smaller than a fourth preset value, the air door is closed; the third predetermined value is greater than the fourth predetermined value.
Optionally, the at least one humidity detection device comprises: the first humidity sensor is arranged in the storage box and used for detecting a first humidity value of the moisture permeable space; the second humidity sensor is arranged in the storage chamber, is positioned above the storage box and is used for detecting a second humidity value of the space above the storage box; wherein the master control device is further configured to calculate a difference between the first humidity value and the second humidity value; when the difference value is smaller than a fifth preset value, opening the air door; when the difference value is detected to be larger than a sixth preset value, closing the air door; the fifth predetermined value is less than the sixth predetermined value.
Optionally, the refrigerator further includes: the timing device is used for recording the opening time of the air door; wherein the at least one humidity detection device comprises: the first humidity sensor is arranged in the storage box and used for detecting a first humidity value of the moisture permeable space; the main control device is also configured to open the air door when the first humidity value is larger than a first preset value; after waiting for the preset time, the air door is closed to prevent the air flow in the air supply duct from entering the storage chamber.
The present invention provides a refrigerator, including: storing box and pass through wet subassembly. The moisture permeable component is arranged at the opening on the upper surface of the storage box. The air inlet of the refrigerator air supply duct is arranged above the height of the upper surface of the storage box, and the vertical distance between the air inlet and the upper surface of the storage box is smaller than the preset distance. Moisture in the air in the moisture permeable space can be conveyed to the outside of the space through the pervaporation membrane through the vapor permeation component, so that the humidity in the moisture permeable space is always kept in a proper range, and condensation or water dripping in the space is prevented. The air inlet is slightly higher than the upper surface of the storage box, so that cold air of the air inlet horizontally sweeps across the upper surface of the moisture permeable component, moisture above the moisture permeable component can be taken away by the cold air, the humidity difference of two sides of the moisture permeable component is improved, and the moisture permeable speed is improved. In the refrigerator, the air inlet and the moisture permeable component are matched for use, so that the humidity of the air in the moisture permeable space can be controlled more conveniently.
The invention also provides a control method of the refrigerator, which comprises the following steps: detecting a first humidity value of a moisture permeable space in the storage box and/or a second humidity value of a space above the storage box; and controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value. Since the moisture permeable space is constantly permeable to water vapor from the moisture permeable member, the humidity of the space above the moisture permeable member is large. When the humidity of the space above the moisture permeable assembly is too high, the difference between the humidity inside and outside the moisture permeable space is reduced, so that the moisture permeable effect of the moisture permeable assembly is reduced. The fan and the air door can be controllably opened and closed according to the humidity values of the moisture permeable space and the space above the moisture permeable component, air supply is started when the humidity of the moisture permeable space or the space above the moisture permeable component is higher or the humidity difference value of the two sides of the moisture permeable component is smaller, and the humidity difference of the two sides of the moisture permeable component is improved so as to improve the moisture permeable effect of the moisture permeable component.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of the inside of a refrigerator according to one embodiment of the present invention;
fig. 2 is a front schematic view of the structure of the inside of a refrigerator according to one embodiment of the present invention;
fig. 3 is a side sectional view of the structure of the inside of the refrigerator according to one embodiment of the present invention;
fig. 4 is an exploded schematic view of a moisture permeable assembly of a refrigerator according to one embodiment of the present invention;
fig. 5 is a schematic view of a control method of a refrigerator according to one embodiment of the present invention;
fig. 6 is a flowchart of a control method of a refrigerator according to one embodiment of the present invention;
fig. 7 is a flowchart of a control method of a refrigerator according to another embodiment of the present invention;
fig. 8 is a flowchart of a control method of a refrigerator according to another embodiment of the present invention;
fig. 9 is a flowchart of a control method of a refrigerator according to another embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 3, an embodiment of the present invention provides a refrigerator including: a case and a storage box 100 and a moisture permeable assembly 300. The refrigerator body is internally provided with a storage chamber of the refrigerator. The storage box 100 is disposed inside the storage compartment. In this embodiment, the refrigerator may be an air-cooled refrigerator, and the storage compartment of the air-cooled refrigerator includes: a refrigerated compartment and a freezer compartment. The storage box 100 may be a drawer, the drawer is composed of a drawer body and a drawing part, the moisture permeable assembly 300 is disposed on the top surface of the drawer body, and in some other embodiments of the present invention, the moisture permeable assembly 300 may also be disposed on the rear side surface of the drawer body. The drawer is detachably arranged at the bottom of a refrigerating chamber of the refrigerator, a plurality of pairs of convex ribs 221 are arranged at two sides of the inner container 220 of the refrigerating chamber, wherein the pair of convex ribs 221 at the bottom of the refrigerating chamber are used for limiting the installation position of the drawer. The refrigerator also comprises an air supply duct arranged at the rear side of the storage compartment, and an evaporator of the refrigerator is arranged in the air supply duct. The refrigerating compartment and the supply air duct are separated by a duct cover 210, that is, the duct cover 210 forms a rear wall of the refrigerating compartment. The air duct cover plate 210 is provided with a plurality of air inlets 212 for conveying cold air in the air supply duct to the storage compartment.
A moisture permeable space is defined in the storage box 100, and an opening is provided on an upper surface of the storage box 100. The moisture permeable component 300 is formed at the opening of the storage box 100 and is configured to allow water vapor inside the moisture permeable space to permeate to the outside of the moisture permeable space in a single direction. The moisture permeable assembly 300 can maintain the humidity in the moisture permeable space within a suitable range. Specifically, when the humidity in the moisture permeable space is greater than the preset humidity value, the moisture permeable assembly 300 allows the water vapor in the moisture permeable space to permeate outward, and when the humidity in the moisture permeable space is less than the preset humidity value, the moisture permeable assembly 300 prevents the water vapor in the moisture permeable space from permeating outward. Therefore, the humidity in the moisture permeable space can be always kept above a preset humidity value and is always in a certain range, so that the air drying of food such as fruits and vegetables in the moisture permeable space can be prevented, and the condensation in the moisture permeable space can be prevented. In this embodiment, the predetermined humidity value is 80% of the relative humidity.
In this embodiment, the openings are rectangular and are disposed on the top surface of the storage box 100. The opening is used for installing the moisture permeable component 300, and the size of the moisture permeable component 300 is matched with the size of the opening, so that the moisture permeable component 300 can completely close the corresponding opening, and the gas exchange between the inside of the moisture permeable space and the outside is prevented.
As shown in fig. 4, the moisture permeable assembly 300 includes: an upper fixing plate 320, a lower fixing plate 330, and a pervaporation membrane 310 sandwiched between the upper fixing plate 320 and the lower fixing plate 330. In the present embodiment, the pervaporation membrane 310 is a composite membrane, and the composite membrane is a membrane having a multi-layer structure formed by combining various plastics and paper, metal or other materials through a lamination extrusion coating, a coextrusion process, or other process technologies. In this embodiment, the composite film is formed by combining a polymer film and a nonwoven fabric. The polymer film forms a hydrophilic layer of the pervaporation membrane 310 and the non-woven fabric forms a hydrophobic layer. The polymer film contains sulfonic acid functional groups that have hydrophilic properties, so that water is readily soluble in the hydrophilic layer and penetrates into the hydrophobic layer of the material before evaporation. The non-woven fabric has good water repellency and is not easy to adsorb water. In this embodiment, the side of the hydrophilic layer facing away from the hydrophobic layer is exposed to the inside of the moisture-permeable space, and the side of the hydrophobic layer facing away from the hydrophilic layer is exposed to the outside of the moisture-permeable space. Moisture inside the moisture permeable space can be discharged to the outside of the moisture permeable space by the pervaporation membrane 310. The pervaporation membrane 310 can block the permeation of other gases while permeating water vapor, and prevent the gas exchange between the inside and the outside of the moisture permeable space.
The upper fixing plate 320 and the lower fixing plate 330 are rectangular and have the same size. The edge of the upper fixing plate 320 is provided with a plurality of buckles 321, the edge of the lower fixing plate 330 is provided with a plurality of projections 331 in a matching manner, and the upper fixing plate 320 and the lower fixing plate 330 fixedly clamp the pervaporation membrane 310 through buckling. The peripheral edge of the upper fixing plate 320 also has an outwardly extending outer edge 322 for overlapping the edge of the opening where the moisture permeable module 300 is installed.
The upper fixing plate 320 and the lower fixing plate 330 are both provided with a plurality of air holes 301 for water vapor diffusion, the air holes 301 are radially arranged at the center of the fixing plate, and the aperture of the air hole 301 far away from the center of the fixing plate is larger than that of the air hole 301 near the center of the fixing plate. And the position of each air hole 301 of the upper fixing plate 320 and the lower fixing plate 330 corresponds to each other to facilitate the circulation of water vapor.
The storage box 100 of the present embodiment includes a moisture permeable assembly 300. Moisture in the air inside the moisture permeable space can be transported to the outside of the space through the pervaporation membrane by the moisture permeable assembly 300 through vaporization and permeation, so that the humidity inside the moisture permeable space is always kept in a proper range, and condensation or water dripping inside the space is prevented.
The air inlet 212 is disposed above the height of the upper surface of the storage box 100, and the vertical distance between the air inlet and the upper surface of the storage box 100 is less than a predetermined distance. The preset distance may be set according to the type of the refrigerator and the size of the storage box 100, and in the present embodiment, preferably, the preset distance may be set to 5 cm. In this embodiment, the air inlet 212 is slightly higher than the upper surface of the storage box 100, so that the cool air from the air inlet 212 sweeps across the upper surface of the moisture permeable component 300 horizontally, and the cool air can take away the moisture above the moisture permeable component 300, thereby improving the dehumidification effect. After moisture is taken away by cold air, the cold air enters the air supply duct again through an air return opening on the air duct cover plate 210, and forms dry and cold air again after heat exchange with the evaporator. In the embodiment, a boss 211 protruding toward the front side of the refrigerator is further formed at a position of the duct cover 210 close to the storage box 100, and the front side of the boss 211 abuts against the back plate of the storage box 100. The air inlets 212 are disposed on the front side surface of the boss 211, so that the air flow of the air inlets 212 directly flows to the upper surface of the moisture permeable assembly 300, and the number of the air inlets 212 is 2, and the air inlets 212 are disposed on the left and right sides of the front surface of the boss 211.
The refrigerator of the present embodiment further includes: at least one damper and at least one fan. Each damper is disposed at a corresponding intake vent 212 and configured to controllably open or close the intake vent 212. In this embodiment, a mechanical transmission device connected to the damper is disposed at the air inlet 212 for opening and closing the damper. The fan is arranged inside the air supply duct and is configured to convey cold air in the air supply duct to the storage room through the air inlet 212. The fan may be an axial flow fan.
In the present embodiment, since the moisture permeable space continuously permeates water vapor from the moisture permeable member 300, the humidity of the space above the moisture permeable member 300 is large. When the humidity of the space above the moisture permeable assembly 300 is too high, the difference between the humidity inside and outside the moisture permeable space becomes small, thereby causing the moisture permeable effect of the moisture permeable assembly 300 to be reduced. According to the test of the inventor, when the humidity difference between two sides of the moisture permeable component 300 is 30%, the moisture permeable speed is only half of that when the humidity difference between two sides is 60%. The fan and the air door can be controllably opened and closed according to the humidity values of the moisture permeable space and the space above the moisture permeable component 300, air supply is started when the humidity of the moisture permeable space or the space above the moisture permeable component 300 is higher, the humidity difference of the spaces at two sides of the moisture permeable component 300 is improved, and the moisture permeable effect of the moisture permeable component 300 is improved.
Specifically, the refrigerator of the present embodiment includes two humidity sensors. The first humidity sensor is arranged inside the storage box 100 and used for detecting a humidity value in the moisture permeable space. The first humidity sensor may be disposed on a sidewall inside the storage box 100. The second humidity sensor is disposed inside the storage compartment and above the storage box 100 for detecting a humidity value of a space above the storage box 100. The second humidity sensor can be arranged on the side wall of the refrigerator inner container.
The air door is also configured to open when the humidity value inside the storage box 100 is detected to be greater than a first preset value and close when the humidity value inside the storage box 100 is detected to be less than a second preset value. The first preset value and the second preset value can be set according to the volume inside the storage box 100. In this embodiment, the first predetermined value may be set to 95% of the relative humidity, and the second predetermined value may be set to 85% of the relative humidity. When the humidity in the storage box 100 is detected to be too high, the air door is opened. The air inlet 212 starts to supply air to reduce the humidity in the space above the moisture permeable assembly 300, so as to increase the difference between the humidity inside and outside the moisture permeable assembly 300, and to discharge more moisture in the storage box 100 into the storage compartment, so as to reduce the humidity in the storage box 100 as soon as possible. If the humidity in the storage box 100 is low, the air door is closed to reduce the moisture permeation speed of the moisture permeation assembly 300, so as to prevent the excessive loss of the moisture in the storage box 100.
The air door is also configured to open when the humidity value of the space above the storage box 100 is detected to be greater than a third preset value; and when the humidity value of the space above the storage box 100 is detected to be smaller than a fourth preset value, the closing is carried out. The third preset value and the fourth preset value can be set according to the size inside the storage chamber. The third predetermined value may be set to 60% rh and the fourth predetermined value may be set to 30% rh. In this embodiment, when the humidity in the space above the storage box 100 is detected to be too high, the air door is opened, and the air inlet 212 starts to supply air, so as to increase the humidity difference between the two sides of the moisture permeable assembly 300, and more moisture in the storage box 100 is discharged into the storage compartment.
In this embodiment, as long as any one of the above-mentioned opening conditions of the air door is satisfied (the humidity value inside the storage box 100 is greater than the first preset value or the humidity value in the space above the storage box 100 is greater than the third preset value), the air door is automatically opened. In this embodiment, the opening and closing of the damper is controlled by the dual condition determination, and the control accuracy can be further improved. In other embodiments of the present invention, only the first humidity sensor or only the second humidity sensor may be provided. The refrigerator controls the opening and closing of the air door only according to the humidity value in the moisture permeable space or the humidity value above the storage box 100. In still other embodiments of the present invention, the opening and closing of the damper may be further controlled according to a difference between the first humidity and the second humidity, and when the difference is smaller than a fifth preset value, the damper is opened; and when the difference value is larger than a sixth preset value, closing the air door.
The refrigerator of this embodiment, its internally mounted has humidity transducer for detect the humidity value in the moisture permeable space. The air door of the air inlet 212 is opened and closed according to the detected humidity value, so that when the humidity in the moisture permeable space is higher, the humidity in the space above the moisture permeable component 300 is reduced, the humidity difference between the two sides of the moisture permeable component 300 is improved, and the moisture permeable rate of the moisture permeable component 300 is improved.
The embodiment also provides a control method of the refrigerator. Fig. 5 is a schematic view of a control method of a refrigerator according to one embodiment of the present invention, the method generally including:
step S502, a first humidity value of a moisture permeable space in the storage box and/or a second humidity value of a space above the storage box are/is detected.
And step S504, controlling the opening and closing state of the air inlet according to the first humidity value and/or the second humidity value. Since the moisture permeable space is constantly permeable to water vapor from the moisture permeable member 300, the humidity of the space above the moisture permeable member 300 is large. When the humidity of the space above the moisture permeable assembly 300 is too high, the difference between the humidity inside and outside the moisture permeable space becomes small, thereby causing the moisture permeable effect of the moisture permeable assembly 300 to be reduced. The fan and the air door can be controllably opened and closed according to the humidity values of the moisture permeable space and the space above the moisture permeable component 300, air supply is started when the humidity of the moisture permeable space or the space above the moisture permeable component 300 is larger or the humidity difference value of the two sides of the moisture permeable component is smaller, the humidity difference of the spaces at the two sides of the moisture permeable component 300 is improved, and the moisture permeable effect of the moisture permeable component 300 is improved.
Fig. 6 is a flowchart of a refrigerator control method according to an embodiment of the present invention. The method opens or closes the air door according to the humidity value in the moisture permeable space. The method sequentially executes the following steps:
step S602, a first humidity value of the moisture permeable space in the storage box 100 is detected.
In step S604, it is determined whether the first humidity value is greater than a first preset value. In this embodiment, the first predetermined value is set to 95% of the relative humidity.
And step S606, if the judgment result in the step S604 is positive, the air door is opened, and the air flow in the air supply duct is allowed to enter the storage compartment. If the humidity in the moisture permeable space is higher than 95% of the relative humidity, the humidity in the moisture permeable space is too high, and it is necessary to discharge moisture. At this time, the air door is opened to allow the air flow to pass through the area above the moisture permeable assembly 300, so as to reduce the humidity in the area, thereby increasing the humidity difference between the two sides of the moisture permeable assembly 300, and further increasing the moisture permeable rate of the moisture permeable assembly 300.
Step S608, continue to detect the first humidity value, and determine whether the first humidity value is smaller than a second preset value. In this embodiment, the second predetermined value is set to 85% of the relative humidity.
In step S610, if the determination result in step S608 is yes, the air door is closed to prevent the air flow in the air supply duct from entering the storage compartment. If the humidity in the moisture permeable space is less than 85% relative humidity, it means that the humidity in the moisture permeable space is low and the moisture release is not necessary for a while. At this point the damper is closed, preventing airflow.
Fig. 7 is a flowchart of a refrigerator control method according to an embodiment of the present invention. The method opens or closes the damper according to the humidity value of the space above the moisture permeable component 300. The method sequentially executes the following steps:
step S702, detecting a second humidity value of the space above the storage box 100.
Step S704, determine whether the second humidity value is greater than a third preset value. In this embodiment, the third predetermined value is set to 60% of the relative humidity.
Step S706, if the judgment result in the step S704 is positive, the air door is opened, and the air flow in the air supply duct is allowed to enter the storage compartment. If the humidity of the space above the storage box 100 is greater than 60% of the relative humidity, it means that the humidity of the space above the storage box 100 is too high, and the moisture permeable assembly 300 has a slow moisture discharge speed. At this time, the air door is opened to enable the air flow to flow through the area above the moisture permeable component 300, so as to reduce the humidity of the area, thereby improving the humidity difference at the two sides of the moisture permeable component 300 and further improving the moisture permeable rate of the moisture permeable component.
Step S708, continue to detect the second humidity value, and determine whether the second humidity value is smaller than a fourth preset value. In this embodiment, the fourth predetermined value is set to 30% of the relative humidity.
In step S710, if the determination result in step S708 is yes, the air door is closed to prevent the air flow in the air supply duct from entering the storage compartment. If the humidity of the space above the storage box 100 is less than 30% of the relative humidity, the humidity of the space above the storage box 100 is low, and the moisture permeable assembly 300 has a high moisture discharge speed. The damper may be closed at this point, preventing airflow.
Fig. 8 is a flowchart of a refrigerator control method according to another embodiment of the present invention. The method opens or closes the damper according to the difference between the humidity values of the moisture permeable space and the space above the moisture permeable assembly 300. The method sequentially executes the following steps:
step S802, a first humidity value of the moisture permeable space and a second humidity value of the space above the storage box 100 are detected.
Step S804 calculates a difference between the first humidity value and the second humidity value. Specifically, the second humidity value is subtracted from the first humidity value to obtain a difference value.
Step S806 determines whether the difference is smaller than a fifth predetermined value. In this embodiment, the fifth predetermined value is set to 35% of the relative humidity difference.
And step S808, if the judgment result in the step S806 is positive, opening the air door and allowing the airflow in the air supply duct to enter the storage compartment. If the humidity difference is less than 35%, the humidity difference between the two sides of the moisture permeable assembly 300 is small, and the moisture permeable assembly 300 has a slow moisture discharge speed. At this time, the air door is opened to enable the air flow to flow through the area above the moisture permeable component 300, so as to reduce the humidity of the area, thereby improving the humidity difference at the two sides of the moisture permeable component 300 and further improving the moisture permeable rate of the moisture permeable component.
Step S810, continue to detect the first humidity value and the second humidity value, and determine whether the humidity difference is greater than a sixth preset value. In this embodiment, the sixth preset value is set to 55% of the relative humidity.
In step S812, if the determination result in step S810 is yes, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage compartment. If the humidity difference is greater than 55%, the damper can be closed to prevent the airflow from flowing.
Fig. 9 is a flowchart of a refrigerator control method according to another embodiment of the present invention. The method sequentially executes the following steps:
step S902 is to detect a first humidity value of the moisture permeable space in the storage box 100.
In step S904, it is determined whether the first humidity value is greater than a first preset value. In this embodiment, the first predetermined value is set to 95% of the relative humidity.
Step S906, if the judgment result of the step S604 is positive, the air door is opened, and the air flow in the air supply duct is allowed to enter the storage compartment.
Step S908, after waiting for a preset time, the air door is closed to prevent the air flow in the air supply duct from entering the storage compartment. In this embodiment, after opening the air door, wait for the preset time and then close the air door, above-mentioned preset time can be set for according to the air-out speed in wind gap and the volume size of storing box 100, in this embodiment, can set up to 1 to 5 min. In the method of the embodiment, the opening time of the air door is preset instead of closing the air door according to the humidity value, and the air door is closed after the preset time is reached, so that the moisture permeation speed of the moisture permeation assembly 300 can be improved. In this embodiment, a timer may be provided in the refrigerator to count the opening time of the damper.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (8)

1. A control method of a refrigerator comprises a refrigerator body, a storage box and a moisture permeable assembly, wherein a storage compartment and an air supply duct positioned at the rear part of the storage compartment are formed in the refrigerator body, and at least one openable air inlet communicated with the air supply duct is formed in the rear wall of the storage compartment; the storage box is arranged at the bottom of the storage compartment, a moisture permeable space is formed in the storage box, the moisture permeable assembly is formed on the upper surface of the storage box and is configured to allow water vapor in the moisture permeable space to permeate outside the moisture permeable space in a one-way mode, the air inlet is arranged above the height of the upper surface of the storage box, and the vertical distance between the air inlet and the upper surface of the storage box is smaller than a preset distance; the refrigerator also comprises at least one air door, and each air door is arranged at the corresponding air inlet and used for opening and closing the air inlet; the moisture permeable assembly comprises an upper fixing plate and a lower fixing plate, the upper fixing plate and the lower fixing plate are both provided with a plurality of air holes for water vapor diffusion, the air holes are radially distributed in the center of the fixing plate, the aperture of the air hole far away from the center of the fixing plate is larger than that of the air hole close to the center of the fixing plate, and the positions of the air holes of the upper fixing plate and the lower fixing plate correspond to each other so as to facilitate the circulation of water vapor; the control method comprises the following steps:
detecting a first humidity value of the moisture permeable space and a second humidity value of the space above the storage box;
controlling the opening and closing state of the air inlet according to the first humidity value and the second humidity value;
the step of controlling the opening and closing state of the air inlet according to the first humidity value and the second humidity value comprises the following steps:
calculating a difference between the first and second humidity values;
judging whether the difference value is smaller than a fifth preset value or not;
if so, opening the air door, and allowing the airflow in the air supply duct to enter the storage compartment;
judging whether the difference value is larger than a sixth preset numerical value or not;
if so, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage chamber.
2. The control method according to claim 1, wherein the step of controlling the open-close state of the air intake according to the first humidity value and the second humidity value includes:
judging whether the first humidity value is larger than a first preset value or not;
if so, opening the air door, and allowing the airflow in the air supply duct to enter the storage compartment;
judging whether the first humidity value is smaller than a second preset value or not;
if so, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage chamber.
3. The control method according to claim 1, wherein the step of controlling the open-close state of the air intake according to the first humidity value and the second humidity value includes:
judging whether the second humidity value is larger than a third preset value or not;
if so, opening the air door, and allowing the airflow in the air supply duct to enter the storage compartment;
judging whether the second humidity value is smaller than a fourth preset value or not;
if so, the air door is closed, and the air flow in the air supply duct is prevented from entering the storage chamber.
4. The control method according to claim 1, wherein the step of controlling the open-close state of the air intake according to the first humidity value and/or the second humidity value includes:
judging whether the first humidity value is larger than a first preset value or not;
if so, opening the air door, and allowing the airflow in the air supply duct to enter the storage compartment;
after waiting for the preset time, the air door is closed to prevent the air flow in the air supply duct from entering the storage chamber.
5. A refrigerator, comprising:
the air supply device comprises a box body, a storage chamber and an air supply duct positioned at the rear part of the storage chamber are formed in the box body, and at least one air inlet communicated with the air supply duct is formed in the rear wall of the storage chamber;
the storage box is arranged at the bottom of the storage chamber, a moisture permeable space is defined in the storage box, and an opening is formed in the upper surface of the storage box;
the moisture permeable component is formed at the opening of the storage box and is configured to allow water vapor inside the moisture permeable space to permeate outside the moisture permeable space in a single direction;
the moisture permeable assembly comprises an upper fixing plate and a lower fixing plate, the upper fixing plate and the lower fixing plate are both provided with a plurality of air holes for water vapor diffusion, the air holes are radially distributed in the center of the fixing plate, the aperture of the air hole far away from the center of the fixing plate is larger than that of the air hole close to the center of the fixing plate, and the positions of the air holes of the upper fixing plate and the lower fixing plate correspond to each other so as to facilitate the circulation of water vapor;
the air inlet is arranged above the height of the upper surface of the storage box, and the vertical distance between the air inlet and the upper surface of the storage box is smaller than a preset distance;
each air door is arranged at the corresponding air inlet and used for opening and closing the air inlet;
at least one humidity detection device arranged in the moisture permeable space and the storage room;
the main control device is electrically connected with the at least one air door and the at least one humidity detection device and is configured to control the opening and closing state of the air inlet according to the humidity value detected by the at least one humidity detection device; wherein
The at least one humidity detection device includes:
the first humidity sensor is arranged in the storage box and used for detecting a first humidity value of the moisture permeable space; and
the second humidity sensor is arranged in the storage chamber, is positioned above the storage box and is used for detecting a second humidity value of the space above the storage box; wherein
The master control device is further configured to calculate a difference between the first humidity value and the second humidity value; when the difference value is smaller than a fifth preset value, the air door is opened; when the difference value is detected to be larger than a sixth preset value, closing the air door;
the fifth preset value is smaller than the sixth preset value.
6. The refrigerator of claim 5, wherein the at least one humidity detection device comprises:
the main control device is further configured to open the air door when the first humidity value is larger than a first preset value; when the first humidity value is detected to be smaller than a second preset value, closing the air door;
the first preset value is greater than the second preset value.
7. The refrigerator of claim 5, wherein the at least one humidity detection device comprises:
the main control device is further configured to open the air door when the second humidity value is detected to be greater than a third preset value; when the second humidity value is detected to be smaller than a fourth preset value, closing the air door;
the third preset value is greater than the fourth preset value.
8. The refrigerator of claim 5, further comprising:
the timing device is used for recording the opening time of the air door; wherein
The main control device is further configured to open the air door when the first humidity value is larger than a first preset value; after waiting for the preset time, the air door is closed to prevent the air flow in the air supply duct from entering the storage chamber.
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CN113494812A (en) * 2020-04-03 2021-10-12 青岛海尔电冰箱有限公司 Refrigerator and control method thereof
CN113494811A (en) * 2020-04-03 2021-10-12 青岛海尔电冰箱有限公司 Refrigerator and control method thereof
CN113531989B (en) * 2020-04-17 2023-05-16 青岛海尔电冰箱有限公司 Refrigerator and control method thereof
CN116007269A (en) * 2021-10-21 2023-04-25 青岛海尔电冰箱有限公司 Refrigerating and freezing device
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